1 /* $Id: out.c,v 1.62 2015/10/12 00:08:16 schwarze Exp $ */
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/types.h>
27 #include "mandoc_aux.h"
31 static void tblcalc_data(struct rofftbl *, struct roffcol *,
32 const struct tbl_opts *, const struct tbl_dat *);
33 static void tblcalc_literal(struct rofftbl *, struct roffcol *,
34 const struct tbl_dat *);
35 static void tblcalc_number(struct rofftbl *, struct roffcol *,
36 const struct tbl_opts *, const struct tbl_dat *);
40 * Parse the *src string and store a scaling unit into *dst.
41 * If the string doesn't specify the unit, use the default.
42 * If no default is specified, fail.
43 * Return 2 on complete success, 1 when a conversion was done,
44 * but there was trailing garbage, and 0 on total failure.
47 a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
51 dst->unit = def == SCALE_MAX ? SCALE_BU : def;
52 dst->scale = strtod(src, &endptr);
97 return *endptr == '\0' ? 2 : 1;
101 * Calculate the abstract widths and decimal positions of columns in a
102 * table. This routine allocates the columns structures then runs over
103 * all rows and cells in the table. The function pointers in "tbl" are
104 * used for the actual width calculations.
107 tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
110 const struct tbl_opts *opts;
111 const struct tbl_dat *dp;
113 size_t ewidth, xwidth;
115 int icol, maxcol, necol, nxcol, quirkcol;
118 * Allocate the master column specifiers. These will hold the
119 * widths and decimal positions for all cells in the column. It
120 * must be freed and nullified by the caller.
123 assert(NULL == tbl->cols);
124 tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
125 sizeof(struct roffcol));
128 for (maxcol = -1; sp; sp = sp->next) {
129 if (TBL_SPAN_DATA != sp->pos)
133 * Account for the data cells in the layout, matching it
134 * to data cells in the data section.
136 for (dp = sp->first; dp; dp = dp->next) {
137 /* Do not used spanned cells in the calculation. */
143 icol = dp->layout->col;
146 col = tbl->cols + icol;
147 col->flags |= dp->layout->flags;
148 if (dp->layout->flags & TBL_CELL_WIGN)
150 tblcalc_data(tbl, col, opts, dp);
155 * Count columns to equalize and columns to maximize.
156 * Find maximum width of the columns to equalize.
157 * Find total width of the columns *not* to maximize.
162 for (icol = 0; icol <= maxcol; icol++) {
163 col = tbl->cols + icol;
164 if (col->flags & TBL_CELL_EQUAL) {
166 if (ewidth < col->width)
169 if (col->flags & TBL_CELL_WMAX)
172 xwidth += col->width;
176 * Equalize columns, if requested for any of them.
177 * Update total width of the columns not to maximize.
181 for (icol = 0; icol <= maxcol; icol++) {
182 col = tbl->cols + icol;
183 if ( ! (col->flags & TBL_CELL_EQUAL))
185 if (col->width == ewidth)
187 if (nxcol && totalwidth)
188 xwidth += ewidth - col->width;
194 * If there are any columns to maximize, find the total
195 * available width, deducting 3n margins between columns.
196 * Distribute the available width evenly.
199 if (nxcol && totalwidth) {
200 xwidth = totalwidth - xwidth - 3*maxcol -
201 (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
202 2 : !!opts->lvert + !!opts->rvert);
205 * Emulate a bug in GNU tbl width calculation that
206 * manifests itself for large numbers of x-columns.
207 * Emulating it for 5 x-columns gives identical
208 * behaviour for up to 6 x-columns.
212 quirkcol = xwidth % nxcol + 2;
213 if (quirkcol != 3 && quirkcol != 4)
220 for (icol = 0; icol <= maxcol; icol++) {
221 col = tbl->cols + icol;
222 if ( ! (col->flags & TBL_CELL_WMAX))
224 col->width = (double)xwidth * ++necol / nxcol
226 if (necol == quirkcol)
228 ewidth += col->width;
234 tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
235 const struct tbl_opts *opts, const struct tbl_dat *dp)
239 /* Branch down into data sub-types. */
241 switch (dp->layout->pos) {
243 case TBL_CELL_DHORIZ:
244 sz = (*tbl->len)(1, tbl->arg);
249 case TBL_CELL_CENTRE:
252 tblcalc_literal(tbl, col, dp);
254 case TBL_CELL_NUMBER:
255 tblcalc_number(tbl, col, opts, dp);
265 tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
266 const struct tbl_dat *dp)
271 str = dp->string ? dp->string : "";
272 sz = (*tbl->slen)(str, tbl->arg);
279 tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
280 const struct tbl_opts *opts, const struct tbl_dat *dp)
283 size_t sz, psz, ssz, d;
289 * First calculate number width and decimal place (last + 1 for
290 * non-decimal numbers). If the stored decimal is subsequent to
291 * ours, make our size longer by that difference
292 * (right-"shifting"); similarly, if ours is subsequent the
293 * stored, then extend the stored size by the difference.
294 * Finally, re-assign the stored values.
297 str = dp->string ? dp->string : "";
298 sz = (*tbl->slen)(str, tbl->arg);
300 /* FIXME: TBL_DATA_HORIZ et al.? */
302 buf[0] = opts->decimal;
305 psz = (*tbl->slen)(buf, tbl->arg);
307 if (NULL != (cp = strrchr(str, opts->decimal))) {
309 for (ssz = 0, i = 0; cp != &str[i]; i++) {
311 ssz += (*tbl->slen)(buf, tbl->arg);
317 /* Adjust the settings for this column. */
319 if (col->decimal > d) {
320 sz += col->decimal - d;
323 col->width += d - col->decimal;
327 if (d > col->decimal)